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Biology, 20.11.2020 18:20 zeesharpe05
Almost 99% of Earth's atmosphere is made up of two gases. What are the two gases and the percents of each? A) 21% oxygen and 78% nitrogen B) 21% water vapor and 78% oxygen C) 21% nitrogen and 78% oxygen D) 21% carbon dioxide and 78% oxygen
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Almost 99% of Earth's atmosphere is made up of two gases. What are the two gases and the percents of...
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